Inhibit

"As a kid, Victor dreamed of training to be a superhero. That didn't go so well.

Now, nine years later, Victor is a resident at the Earl Estate, a home for kids who haven't yet demonstrated that they can control their powers. With his 18th birthday - and a transfer - only a few weeks away, he has one last chance to prove he is capable enough to receive his licence and go home to a normal life. But when he most needs things to go smoothly for once, everything starts to go wrong, and he finds himself tangled in the plot of a mysterious arsonist..." (http://inhibitcomic.com/about)

Notes:

Character: Julia Blue has an amputated leg and wears a prosthetic. She also is missing some fingers due to her power.

David McGowan wears hearing aids however I believe it is to control his super hearing (his power) rather than hearing loss.

Reviews and Q&A's *positive comments about the correct use of ASL on the webtoons pages